From WordNet (r) 3.0 (2006) [wn]:
July
n 1: the month following June and preceding August
From The Collaborative International Dictionary of English v.0.48 [gcide]:
July \Ju*ly"\, n.; pl. Julies. [L. Julius; -- named from Caius
Julius Caesar, who was born in this month: cf. F. Juillet.]
The seventh month of the year, containing thirty-one days.
[1913 Webster]
Note: This month was called Quintilis, or the fifth month,
according to the old Roman calendar, in which March was
the first month of the year.
[1913 Webster]